lwIP
2.1.0
Lightweight IP stack
|
#include "lwip/opt.h"
#include "lwip/pbuf.h"
#include "lwip/ip_addr.h"
#include "lwip/netif.h"
#include "lwip/prot/icmp.h"
#include "lwip/icmp6.h"
Enumerations | |
enum | icmp_dur_type { ICMP_DUR_NET = 0, ICMP_DUR_HOST = 1, ICMP_DUR_PROTO = 2, ICMP_DUR_PORT = 3, ICMP_DUR_FRAG = 4, ICMP_DUR_SR = 5 } |
enum | icmp_te_type { ICMP_TE_TTL = 0, ICMP_TE_FRAG = 1 } |
Functions | |
void | icmp_input (struct pbuf *p, struct netif *inp) |
void | icmp_dest_unreach (struct pbuf *p, enum icmp_dur_type t) |
void | icmp_time_exceeded (struct pbuf *p, enum icmp_te_type t) |
ICMP API
enum icmp_dur_type |
enum icmp_te_type |
void icmp_dest_unreach | ( | struct pbuf * | p, |
enum icmp_dur_type | t | ||
) |
Send an icmp 'destination unreachable' packet, called from ip_input() if the transport layer protocol is unknown and from udp_input() if the local port is not bound.
p | the input packet for which the 'unreachable' should be sent, p->payload pointing to the IP header |
t | type of the 'unreachable' packet |
Processes ICMP input packets, called from ip_input().
Currently only processes icmp echo requests and sends out the echo response.
p | the icmp echo request packet, p->payload pointing to the icmp header |
inp | the netif on which this packet was received |
void icmp_time_exceeded | ( | struct pbuf * | p, |
enum icmp_te_type | t | ||
) |
Send a 'time exceeded' packet, called from ip_forward() if TTL is 0.
p | the input packet for which the 'time exceeded' should be sent, p->payload pointing to the IP header |
t | type of the 'time exceeded' packet |